[2/2] settings: volume tweaks
Setting to disable volume adjust sounds (VOLUME_ADJUST_SOUNDS_ENABLED)
This is so annoying :)

Enhanced dialog to add checkbox for unlinking ringer and
notification volume (VOLUME_LINK_NOTIFICATION)

some minor code style issues fixed + always use onchange listener
onclick is depreciated even if google still uses it....but
we can go with actual API

Expandable Volume Overlay

Change-Id: I57ae0a82cefcafee36540e20d8545f438494814b
Merge "[2/2] settings: volume tweaks Setting to disable volume adjust sounds (VOLUME_ADJUST_SOUNDS_ENABLED) This is so annoying :)" into kitkat